Chef knife handle having a thumb support



FIG. 1 is a left side perspective view of a chef knife handle having a thumb support showing my new design;

FIG. 2 is a right side perspective thereof;

FIG. 3 is a front end elevation thereof;

FIG. 4 is a rear end elevation thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing a handle illustrate portions of the chef knife handle having a thumb support. The broken lines showing a blade illustrate environmental structure. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a chef knife handle having a thumb support, as shown and described. 